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Features of energy distribution for blast vibration signals based on wavelet packet decomposition

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Journal of Central South University of Technology 2005年第z1期12卷 135-140页

作者： ling Tong-hua li Xi-bing DAI Ta-gen PENG Zhen-bin School of High-way Engineering Changsha University of Science and Technology Changsha 410077 China School of Resources and Safety Engineering Central South University Changsha 410083 China School of Resources and Safety Engineering Central South University Changsha 410083 China School of Geoscience and Environmental Engineering Central South University Changsha 410083 China School of Geoscience and Environmental Engineering Central South University Changsha 410083 China

Blast vibration analysis constitutes the foundation for studying the control of blasting vibration damage and provides the precondition of controlling blasting vibration. Based on the characteristics of short-time nonstationary random signal, the laws of energy distribution are investigated for blasting vibration signals in different blasting conditions by means of the wavelet packet analysis technique. The characteristics of wavelet transform and wavelet packet analysis are introduced. Then, blasting vibration signals of different blasting conditions are analysed by the wavelet packet analysis technique using MATLAB; energy distribution for different frequency bands is obtained. It is concluded that the energy distribution of blasting vibration signals varies with maximum decking charge,millisecond delay time and distances between explosion and the measuring point. The results show that the wavelet packet analysis method is an effective means for studying blasting seismic effect in its entirety, especially for constituting velocity-frequency criteria.

关键词： blasting vibration non-stationary random signal energy distribution wavelet transform wavelet packet decomposition

Isolation and Manipulation of Quantitative Trait Loci for Disease Resistance in Rice Using a Candidate Gene Approach

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Molecular Plant 2008年第5期1卷 786-793页

作者： Ke-Ming Hu De-Yun Qiu Xiang-ling Shen Xiang-hua li Shi-Ping Wang National Key Laboratory of Crop Genetic Improvement National Center of Plant Gene Research (Wuhan) Huazhong Agricultural University Wuhan 430070 China

Bacterial blight caused by Xanthomonas oryzae pv. oryzae and fungal blast caused by Magnaporthe grisea result in heavy production losses in rice, a main staple food for approximately 50% of the world＇s population. Application of host resistance to these pathogens is the most economical and environment-friendly approach to solve this problem. Quantitative trait loci （QTLs） controlling quantitative resistance are valuable sources for broad-spectrum and durable disease resistance. Although large numbers of QTLs for bacterial blight and blast resistance have been identified, these sources have not been used effectively in rice improvement because of the complex genetic control of quantitative resistance and because the genes underlying resistance QTLs are unknown. To isolate disease resistance QTLs, we established a candidate gene strategy that integrates linkage map, expression profile, and functional complementation analyses. This strategy has proven to be applicable for identifying the genes underlying minor resistance QTLs in rice-Xoo and rice-M, grisea systems and it may also help to shed light on disease resistance QTLs of other cereals. Our results also suggest that a single minor QTL can be used in rice improvement by modulating the expression of the gene underlying the QTL. Pyramiding two or three minor QTL genes, whose expression can be managed and that function in different defense signal transduction pathways, may allow the breeding of rice cultivars that are highly resistant to bacterial blight and blast.

关键词： bacterial blight blast Oryza sativa quantitative resistance QTL.

Local magnetic moment oscillation around an Anderson impurity on graphene

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 192-201页

作者： Shuai li Zhen Ma Jin-hua Gao School of Science Hebei University of Science and Technology School of Electronics and Information Zhengzhou University of Light Industry School of Physics and Wuhan National High Magnetic Field Center Huazhong University of Science and Technology

We theoretically investigate the spin resolved Friedel oscillation （FO） and quasiparticle interference （QPI） in graphene induced by an Anderson *** the impurity becomes magnetic,the resulted FO becomes spin dependent,which gives rise to a local magnetic moment oscillation with an envelop decaying as r-2in real space in the doping ***,at half filling,the electron density and local magnetic moment will not oscillate but decay as *** spin resolved FO has both sublattice and spin ***,the local magnetic moment decay at half filling only occurs at one sublattice of graphene,which is quite like the phenomenon observed in the STM experiment (***ález-Herrero et al.,Science 352,437 （2016）).We further give an analytic formula about such spin dependent FO based on the stationary phase ***,we study the interference of quasiparticles around the magnetic impurity by calculating the spin dependent Fourier-transformed local density of states （FT-LDOS）.Our work gives a comprehensive understanding about the local magnetic moment oscillation around an Anderson impurity on graphene.

关键词： Friedel oscillation local magnetic moment graphene Anderson impurity

ANALYSIS OF SYMMETRY OF C_60) ADSORBED ON THE SILVER MIRROR BY SERS SPECTRUM

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Chinese Chemical Letters 1993年第1期4卷 69-70页

作者： Jun HU, Zhi San XU, Shen Grong SHENG, Yun’e ZENG, Xiao hua WANG, Shu Nian CHENG, ling ZHU and Gui hua li Department of Chemistry Center of Analysis and Measurement Wuhan University

The SERS spectrum of C_(60) was obtained by using silver mirror. From the SERS spectrum of C_(60) and the IR spectrum of C_(60), we proposed that C_(60) adsorbed on the silver mirror adopts a more ellipsoidal shape.

关键词： SERS IR ANALYSIS OF SYMMETRY OF C60 ADSORBED ON THE SILVER MIRROR BY SERS SPECTRUM

SEFormer:A lightweight CNN-Transformer Based on Separable Multiscale Depthwise Convolution and Efficient Self-Attention for Rotating Machinery Fault Diagnosis

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Computers, Materials & Continua 2025年第1期82卷 1417-1437页

作者： Hongxing Wang Xilai Ju hua Zhu huafeng li State Key Laboratory of Mechanics and Control for Aerospace Structures Nanjing University of Aeronautics and AstronauticsNanjing210016China School of Computer Science and Engineering Nanyang Technological UniversitySingapore639798Singapore

Traditional data-driven fault diagnosis methods depend on expert experience to manually extract effective fault features of signals,which has certain ***,deep learning techniques have gained prominence as a central focus of research in the field of fault diagnosis by strong fault feature extraction ability and end-to-end fault diagnosis ***,utilizing the respective advantages of convolution neural network(CNN)and Transformer in local and global feature extraction,research on cooperating the two have demonstrated promise in the field of fault ***,the cross-channel convolution mechanism in CNN and the self-attention calculations in Transformer contribute to excessive complexity in the cooperative *** complexity results in high computational costs and limited industrial *** tackle the above challenges,this paper proposes a lightweight CNN-Transformer named as SEFormer for rotating machinery fault ***,a separable multiscale depthwise convolution block is designed to extract and integrate multiscale feature information from different channel dimensions of vibration ***,an efficient self-attention block is developed to capture critical fine-grained features of the signal from a global ***,experimental results on the planetary gearbox dataset and themotor roller bearing dataset prove that the proposed framework can balance the advantages of robustness,generalization and lightweight compared to recent state-of-the-art fault diagnosis models based on CNN and *** study presents a feasible strategy for developing a lightweight rotating machinery fault diagnosis framework aimed at economical deployment.

关键词： CNN-Transformer separable multiscale depthwise convolution efficient self-attention fault diagnosis

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辽宁省高校图书馆典藏工作现状与创新

图书馆学研究（应用版） 2011年第8期 42-44页

作者：叶翎李华大连医科大学图书馆

通过对2010年辽宁省排名前12所高校图书馆典藏岗位设置情况进行调查,揭示当前高校图书馆典藏岗位设置、工作流程的现状和存在的局限性、缺少流动性、缺乏主动性等问题,对目前全开放服务模式和网络环境下实行动态典藏的新模式进行探讨。

关键词：高校图书馆典藏管理管理模式

Nociceptive input induces hippocampal neuronal apoptosis of rats

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Nociceptive input induces hippocampal neuronal apoptosis of ...

中国神经科学学会第四次会员代表大会暨第七届全国学术会议

作者： Yu-Yan HU,Qing-Jun li~*,Wen-Bin li,ling-Yun ling,li-hua GUO Department of Pathophysiology,HeBei Medical University,ShiJiazhuang,050017,China

＜正＞In present study we investigated whether periphery inflammatory pain can induce apoptosis of hippocampal neurons and investigated its profound mechanism Rats were subcutaneously injected with 0.2ml 5%formalin into the ventral surface of the right hind paw to induce periphery inflammatory *** cytometry was used to assay the ratio of apoptosis of hippocampal neurons,and the immunohistochemistry was used to observe the expression of proapoptotic p53 protein in hippocampal *** the second day after the injection of formalin,the ratio of apoptosis of hippocampal neurons significantly increased compared with the control *** increase in ratio of neuronal apoptosis peaked on the third day and decreased on the forth *** the periphery inflammatory pain resulted in an upregulation in expression of p53 protein in the CA1,CA3 and dentate gyrus regions of the rat *** results indicated that formalin-induced nociceptive input can lead to upregulation in expression of p53 protein and apoptosis of hippocampal neurons in ***,we investigated the effect of the antagonist of NMDA receptor on the apoptosis of hippocampal neurons induced by nociceptive *** were subcutaneously injected with 0.2 ml 5%formalin into the ventral surface of the right hind paw to induce inflammatory ***-801,a noncompetitive antagonist of the NMDA receptor,or normal saline was administered by intracerebroventricular injection 15 min prior to formalin *** administration of normal saline,the ratio of apoptosis of hippocampal neurons and the expression of p53 protein in hippocampal subregions on the third day after formalin injection significantly increased compared with those of the sham group,while the administration of MK-801 resulted in a significant decrease in both the ratio of apoptosis of hippocampal neurons and the expression of p53 protein in hippocampal subregions in contrast to those of the normal saline *** results suggest

关键词： periphery inflammatory pain p53 hippocampus MK-801

来源： cnki会议评论

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发展安徽农业产业化经营的战略思考

乡镇经济 2005年第11期21卷 8-11页

作者：张涛凌丽华安徽建筑工业学院安徽合肥230022

农业是我国的立国之本,发展安徽省的农业产业化经营具有重要的战略意义:首先是全面繁荣农村经济,建设农村小康社会的需要;其次是实现农业结构战略性调整,提高农产品竞争力的需要;第三是加快农村劳动力转移,增加农民收入的需要;第四是提... 详细信息

农业是我国的立国之本,发展安徽省的农业产业化经营具有重要的战略意义:首先是全面繁荣农村经济,建设农村小康社会的需要;其次是实现农业结构战略性调整,提高农产品竞争力的需要;第三是加快农村劳动力转移,增加农民收入的需要;第四是提高安徽农业生产组织化程度、实现农业现代化的有效手段。推进本省农业产业化的基本途径有:培育、壮大农业产业化龙头企业;发展特色产品,全面实施农业名牌战略;大力实施农产品流通工程;尽快完善利益协调机制。

关键词：农业产业化龙头企业农业结构调整安徽经营战略

Recent Strategies and Advances in Hydrogel‑Based Delivery Platforms for Bone Regeneration

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Nano-Micro Letters 2025年第3期17卷 389-439页

作者： Xiao Wang Jia Zeng Donglin Gan Kun ling Mingfang He Jianshu li Yongping Lu Scientific and Technological Innovation Center for Biomedical Materials and Clinical Research Guangyuan Key Laboratory of Multifunctional Medical HydrogelGuangyuan Central HospitalGuangyuan 628000People’s Republic of China Jiangsu Collaborative Innovation Center of Biomedical Functional Materials Jiangsu Key Laboratory of Bio‑Functional MaterialsSchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjing 210023People’s Republic of China College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065People’s Republic of China

Bioactive molecules have shown great promise for effectively regulating various bone formation processes,rendering them attractive therapeutics for bone ***,the widespread application of bioactive molecules is limited by their low accumulation and short half-lives in *** have emerged as ideal carriers to address these challenges,offering the potential to prolong retention times at lesion sites,extend half-lives in vivo and mitigate side effects,avoid burst release,and promote adsorption under physiological *** review systematically summarizes the recent advances in the development of bioactive molecule-loaded hydrogels for bone regeneration,encompassing applications in cranial defect repair,femoral defect repair,periodontal bone regeneration,and bone regeneration with underlying ***,this review discusses the current strategies aimed at improving the release profiles of bioactive molecules through stimuli-responsive delivery,carrier-assisted delivery,and sequential ***,this review elucidates the existing challenges and future directions of hydrogel encapsulated bioactive molecules in the field of bone regeneration.

关键词： Hydrogel Bone regeneration Bioactive molecules Drug delivery Nano-/microscale carriers